feat(#1379): show prediction score in NER

[leiyre]

closes #1379

This PR includes score in prediction tooltip, improves score filter styles and prediction highlighting in text

[frascuchon]

I've included here changes to process entity-level scores as record scores if the prediction score is not defined.

[codecov]

Codecov Report

Merging #1389 (054f014) into master (ba76841) will decrease coverage by 0.95%.
The diff coverage is 100.00%.

❗ Current head 054f014 differs from pull request most recent head d51c100. Consider uploading reports for the commit d51c100 to get more accurate results

@@            Coverage Diff             @@
##           master    #1389      +/-   ##
==========================================
- Coverage   95.45%   94.50%   -0.96%     
==========================================
  Files         113      130      +17     
  Lines        5792     5894     +102     
==========================================
+ Hits         5529     5570      +41     
- Misses        263      324      +61     

Flag	Coverage Δ
pytest	94.50% <100.00%> (-0.96%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...rix/server/tasks/token_classification/api/model.py	98.20% <100.00%> (ø)
src/rubrix/client/sdk/commons/api.py	84.37% <0.00%> (-4.76%)	⬇️
src/rubrix/client/api.py	95.16% <0.00%> (-1.10%)	⬇️
src/rubrix/monitoring/_transformers.py	94.04% <0.00%> (-0.14%)	⬇️
src/rubrix/utils.py	100.00% <0.00%> (ø)
src/rubrix/__init__.py	70.58% <0.00%> (ø)
src/rubrix/server/server.py	94.33% <0.00%> (ø)
src/rubrix/monitoring/_spacy.py	92.50% <0.00%> (ø)
src/rubrix/server/security/model.py	100.00% <0.00%> (ø)
src/rubrix/client/sdk/text2text/api.py	100.00% <0.00%> (ø)
... and 122 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update ba76841...d51c100. Read the comment docs.

[frascuchon]

We must discuss last notes in issue